Process of manufacturing conical tubes or masts.



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(Application filed Sept. 10, 1896.)

(No Model.)

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llwrrnn STATES PATENT Trice.

ADOLPII HIISENER, OF DUISBURG, GERMANY, ASSIGNOR TO FRANZ JOSEF SEYFRIED, OF MULHEIM-ON-TI-lE-RHINE, GERMANY.

PROCESS OF MANUFACTURING CONICAL TUBES OR MASTS.

SPECIFICATION forming part of Letters Patent No. 642,986, dated February 6, 1900.

Application filed September 10, 1896. Serial No. 605,390. (No specimens.)

To all whom it may concern: interior bore is narrow at one end and gradu- Be it known that I, ADOLPH HUSENER, a ally widens out toward the other end. In carsubject of the German Emperor, residing at rying out myprocess the exterior of the strip Duisburg, Germany, have invented an Imis then made to conform to the bore by cut- 5 provement in Processes of and Apparatus ting awaythe extraneous metal, (indicatedat 55 for the Production of Pipes or other Hollow in the drawings,) and thus a double strip is Bodies, of which the following is a specificaobtained which conforms in contour to the intion. ner slot.

This invention is an improved process for In order to prevent waste and to obtain a to the manufacture of conical tubes and masts quicker mode of manufacture by rolling out 6: and hollow bodies varying in size or in crosssimultaneously several strips, it is of advansection throughout the length. tage, especially for small tubes, to make large Theinvention therefore consistsin the novel hollow ingots with two or more reversely-arprocess of making the tubes, &c., and in cerranged conical openings, Figs. 4 and 5, and t tain novel apparatus used in that process, as then roll the same out, Figs. 6 and 7, and to 65 will be hereinafter described. separate the resultant compound double strip In the accompanying drawings, Figure l is by dividing it on the lines a: a: into independa view of a form of ingot used in my process. ent double strips. Fig. 2 shows the resultant double strip. The manufacture of ingots (indicated in Figs. 3, 4, and 5 are views of other forms of Figs. 4 and 5) will not be difficult and will 70 ingots. Figs. 6 and 7 show the resultant douconsiderably facilitate the manufacture of ble strips produced by rollingtheingots shown tubes of all kinds. in-Figs. 4 and 5, respectively; and Fig. Sis a By cutting away the extra metal (see Fig. section of a finished conical tube. 2) or dividing the compound strips and then The invention is an improvement on the expanding the double strips they can be 75 known process of producing pipes and hollow transformed into conical tubes or hollow bodies by rolling out hollow ingots to double bodies. When the expanding has been efstrips, which are subsequently expanded. fected 'in part or entirely, the ribs which are The present invention has for its object to formed by the expansion of the metal can be produce directly by a novel improvement in flattened out over the tongue-shaped man- 80 the old process conical tubes or hollow bodies drels. The expanding of the double strips of variable cross-section, and in order to make thus obtained can be effected in any suitable such tubes of conical form I use ingots which way well known in the art. are exteriorly cylindrical or uniform in cross Having thus described my invention, what section and are interiorly conical and roll I therefore claim as new, and desire to secure 85 these ingots to exteriorly-cylindrical strips or by Letters Patent thereon, is to strips of exteriorly equal breadth. After- 1. The herein-described process of manuward I cutoff the exterior waste, and thus obfacturin g conical tubes, &c., consisting in taktain exteriorly and interiorly conical strips, ing an ingot of uniform exterior cross-section from which the conical tubes can be made by and forming therein an interiorly-tapered 9o expansion. In short, I produce conical tubes bore; then rolling out said ingot into a long by an improvement on the known process by flat double strip having a uniform exterior employing exteriorly-cylindrical ingots. diameter or widtlnanda taperedint-erior; then For conical tubes the ingot I) must be so cutting off the surplus metal from the sides shaped that it has an inner conical or flaring of the strip so as to make its exterior contour 95 opening, while its exterior is of uniform crossconform to its interior; and then expanding section. If such ingot is now rolled out in an said strip thereby forming a hollow conical ordinary rolling-mill under lateral pressure tube, substantially as and for the purpose set or in a closed caliber a double strip is obtained forth. which has a uniform exterior width; but its 2. The herein-described process of manu- I00 contour to their interior bore, and snbse-- quently expanding the double strips into con- 10 ical tubes, substantially as described.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

ADOLPI-I I-IUSENER.

Witnesses:

WILLIAM H. MADDEN, TH. WALDAPFEL. 

